Case 43
With discussion
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CASE 43 (September 2009)

Clinical information

We received in consultation several microscope slides of a renal tumor.

The case is a tumoral renal lesion found in a 56-year-old woman. She presented with vague abdominal symptoms. Abdominal ultrasound revealed a multicystic tumor, 3.8 cm in greatest diameter, located in the upper pole of left kidney.

The macroscopic description we received said that the lesion measured 3.9 x 3.5 x 3.5 cm, was well defined, with no apparent extrarenal extension or hilium involvement. On cut, the mass was completely multicystic, without apparent solid areas, the cavities meassured between 0.1 and 1.2 cm, some occupied by translucent liquid ond others by brown liquid. There were no other gross lesions (we did not receive macroscopic photographs).

See the images.

Figure 1. H&E, X100.

Figure 2. H&E, X100.

Figure 3. H&E, X200.

Figure 4. H&E, X200.

Figure 5. H&E, X400.

Figure 6. H&E, X400.

Figure 7. H&E, X400.

There were not solid areas with clear cells or renal parenchyma in the septa.

What is your diagnosis?

See diagnosis and discussion